feature: add musllinux_1_2_armv7l (#1455)

Author: mayeut

Diff for: .travis.yml

@@ -57,6 +57,10 @@ jobs:
       virt: vm
       group: edge
       env: POLICY="musllinux_1_2" PLATFORM="aarch64"
+    - arch: arm64-graviton2
+      virt: vm
+      group: edge
+      env: POLICY="musllinux_1_2" PLATFORM="armv7l"
     - arch: s390x
       env: POLICY="musllinux_1_2" PLATFORM="s390x"
     - arch: ppc64le

Diff for: README.rst

@@ -184,6 +184,7 @@ Toolchain: GCC 13
 - aarch64 image: ``quay.io/pypa/musllinux_1_2_aarch64``
 - ppc64le image: ``quay.io/pypa/musllinux_1_2_ppc64le``
 - s390x image: ``quay.io/pypa/musllinux_1_2_s390x``
+- armv7l image: ``quay.io/pypa/musllinux_1_2_armv7l``
 
 
 musllinux_1_1 (Alpine Linux 2.12 based)

Diff for: build.sh

@@ -27,6 +27,9 @@ elif [ "${PLATFORM}" == "ppc64le" ]; then
 elif [ "${PLATFORM}" == "s390x" ]; then
 	GOARCH="s390x"
 	MULTIARCH_PREFIX="s390x/"
+elif [ "${PLATFORM}" == "armv7l" ]; then
+	GOARCH="arm/v7"
+	MULTIARCH_PREFIX="arm32v7/"
 else
 	echo "Unsupported platform: '${PLATFORM}'"
 	exit 1

Diff for: docker/build_scripts/build-cpython.sh

@@ -46,10 +46,14 @@ if [ "${CPYTHON_VERSION}" == "3.6.15" ]; then
 	CFLAGS_EXTRA="${CFLAGS_EXTRA} -fno-tree-loop-vectorize -fno-tree-slp-vectorize"
 fi
 if [ "${AUDITWHEEL_POLICY}" == "manylinux2014" ] ; then
-    # Python 3.11+
+	# Python 3.11+
 	export TCLTK_LIBS="-ltk8.6 -ltcl8.6"
 fi
 
+if [ "${BASE_POLICY}_${AUDITWHEEL_ARCH}" == "musllinux_armv7l" ]; then
+	CONFIGURE_ARGS="${CONFIGURE_ARGS} --build=arm-linux-musleabihf"
+fi
+
 OPENSSL_PREFIX=$(find /opt/_internal -maxdepth 1 -name 'openssl*')
 if [ "${OPENSSL_PREFIX}" != "" ]; then
 	CONFIGURE_ARGS="${CONFIGURE_ARGS} --with-openssl=${OPENSSL_PREFIX}"

Diff for: docker/build_scripts/finalize.sh

@@ -80,10 +80,12 @@ pipx upgrade-shared --pip-args="--no-index --find-links=/tmp/pinned-wheels"
 # install other tools with pipx
 for TOOL_PATH in $(find ${MY_DIR}/requirements-tools -type f); do
 	TOOL=$(basename ${TOOL_PATH})
-	# uv doesn't provide musl s390x wheels due to Rust issues
-	if [[ "${TOOL}" != "uv" || "${BASE_POLICY}-${AUDITWHEEL_ARCH}" != "musllinux-s390x" ]]; then
-		pipx install --pip-args="--require-hashes -r ${TOOL_PATH} --only-binary" ${TOOL}
-	fi
+	case ${AUDITWHEEL_PLAT}-${TOOL} in
+		musllinux*_armv7l-swig) apk add --no-cache swig;;
+		musllinux*_armv7l-cmake) apk add --no-cache cmake;;
+		musllinux*_s390x-uv) continue;;  # uv doesn't provide musl s390x wheels due to Rust issues
+		*) pipx install --pip-args="--require-hashes -r ${TOOL_PATH} --only-binary" ${TOOL};;
+	esac
 done
 
 # We do not need the precompiled .pyc and .pyo files.

Diff for: docker/manylinux-entrypoint

@@ -4,6 +4,11 @@ set -eu
 
 if [ "${AUDITWHEEL_ARCH}" == "i686" ] && [ "$(uname -m)" == "x86_64" ]; then
 	linux32 "$@"
+elif [ "${AUDITWHEEL_ARCH}" == "armv7l" ] && [ "$(uname -m)" != "armv7l" ]; then
+	if [ "$(linux32 uname -m)" == "armv8l" ]; then
+		export _PYTHON_HOST_PLATFORM="linux_armv7l"
+	fi
+	linux32 "$@"
 else
 	exec "$@"
 fi

Diff for: tests/run_tests.sh

@@ -100,8 +100,9 @@ for PYTHON in /opt/python/*/bin/python; do
 		echo "invalid answer, expecting 42"
 		exit 1
 	fi
-	if [ "${PYVERS}" != "3.6" ] && [ "${PYVERS}" != "3.7" ] && [ "${IMPLEMENTATION}" != "graalpy" ] && [ "${AUDITWHEEL_POLICY:0:9}_${AUDITWHEEL_ARCH}" != "musllinux_s390x" ] && [ "${AUDITWHEEL_ARCH}" != "ppc64le" ]; then
+	if [ "${PYVERS}" != "3.6" ] && [ "${PYVERS}" != "3.7" ] && [ "${IMPLEMENTATION}" != "graalpy" ] && [ "${AUDITWHEEL_POLICY:0:9}_${AUDITWHEEL_ARCH}" != "musllinux_s390x" ] && [ "${AUDITWHEEL_ARCH}" != "ppc64le" ] && [ "${AUDITWHEEL_ARCH}" != "armv7l" ]; then
 		# no uv on musllinux s390x
+		# FIXME,  armv7l test fails on Travis CI but works with qemu (maybe armv8l vs armv7l ?)
 		# FIXME, ppc64le test fails on Travis CI but works with qemu
 		UV_PYTHON=/tmp/uv-test-${IMPLEMENTATION}${PYVERS}/bin/python
 		uv venv --python ${PYTHON} /tmp/uv-test-${IMPLEMENTATION}${PYVERS}